AKG C547 Boundary Layer Microphone – Hypercardioid Low-Profile Mic for Stage & Installations
The AKG C547 Boundary Layer Microphone is engineered for high-clarity speech, stage performance, theatre work, and fixed installations where discreet placement and focused pickup are essential. Featuring a hypercardioid polar pattern, this microphone captures direct sound with impressive precision while minimizing unwanted ambient noise, making it ideal for use on lecterns, altars, conference tables, and stage floors.
Built with RFi-Shield technology, the C547 resists mobile phone interference and electromagnetic noise, ensuring a clean audio signal even in environments saturated with wireless devices. Its rugged, low-profile housing blends seamlessly into the stage while offering long-term durability, and the paintable Grille lets installers match it perfectly to any décor.
Key Features
- Hypercardioid Pickup for tight, focused sound capture with reduced bleed.
- RFi-Shield Protection eliminates interference from wireless devices.
- Low-Profile, Rugged Design ideal for stage, theatre, and conferencing installations.
- Paintable Grille for aesthetic customization.
- Studio-Grade Components derived from the iconic AKG C747 V11 series.
- Boundary Layer Technology delivers natural, open sound with excellent clarity.
Specifications
Audio Performance
- Frequency Range: 30 – 18,000 Hz
- Sensitivity: 8.5 mV/Pa
- Signal-to-Noise Ratio: 72 dB-A
- Equivalent Noise Level: 22 dB-A
- Bass-Cut Filter: 150 Hz
Design & Dimensions
- Polar Pattern: Hypercardioid
- Dimensions: 120 × 185 × 19 mm
- Weight: 160 g
- Finish: Matte dark gray.
Interface & Powering
- Output: Balanced 6-pin XLR male
- Power Requirements: 9–52V phantom power
Frequently Asked Questions (FAQs)
Why is the AKG C547 ideal for live speech and presentation environments?
Its hypercardioid pattern isolates the speaker while rejecting surrounding noise, and RFi-Shield prevents interference, ensuring clean, focused audio in busy environments.
Can the C547 be used for musical instruments?
Yes. Its boundary layer design captures percussive sources—like kick drums, theater foot effects, or floor instruments—with excellent clarity and presence.
Is this microphone compatible with standard sound systems?
The C547 features a balanced XLR connection and is compatible with any professional mixer or interface that provides 9–52V phantom power, ensuring broad compatibility.
How durable is the microphone for use on stage?
It features a non-crush, low-profile housing designed to withstand foot traffic, stage pressure, and continuous handling in demanding environments.
Can the Grille be customized for installations?
Yes. The paintable Grille allows integrators to match it with stage color schemes, walls, podiums, or table surfaces for a discreet look.
Does the microphone help avoid interference from mobile phones?
Absolutely. The built-in RFi-Shield circuit eliminates buzzing and interference caused by nearby smartphones and wireless signals.
Does the C547 work well in theaters?
Yes. Its low-profile form factor and focused pickup make it excellent for capturing actors’ voices without visual distraction or unwanted ambience.
Is the bass-cut valuable filter in real-world applications?
The 150 Hz bass-cut filter helps reduce handling noise, floor vibration, and low-frequency rumble, improving vocal intelligibility in live environments.


